Buy article PDF
The purchased file will be sent to you
via email after the payment is completed.
US$ 35
|
Steel and Composite Structures Volume 4, Number 6, December 2004 , pages 489-507 DOI: https://doi.org/10.12989/scs.2004.4.6.489 |
|
|
|
Non-linear analysis of composite steel-concrete beams with incomplete interaction |
||
Bojan Cas, Sebastjan Bratina, Miran Saje and Igor Planinc
|
||
| Abstract | ||
| The flexibility of the connection between steel and concrete largely influences the globalrnbehaviour of the composite beam. Therefore the way the connection is modelled is the key issue in its structural analysis. Here we present a new strain-based finite element formulation in which we consider nonlinear material and contact models. The computational efficiency and accuracy of the formulation is proved with the comparison of our numerical results with the experimental results of Abdel Aziz (1986) obtained in a full-scale laboratory test. The shear connectors are assumed to follow a non-linear load−slip relationship proposed by Ollgaard et al. (1971). We introduce the notion of the generalized slip, which offers a better physical interpretation of the behaviour of the contact and gives an additional material slip parameter. An excellent agreement of experimental and numerical results is obtained, using only a few finite elements. This demonstrates that the present numerical approach is appropriate for the evaluation of behaviour of planar composite beams and perfect for practical calculations. | ||
| Key Words | ||
| steel-concrete composite beam; shear connection; interlayer slip; non-linear analysis; finite element method. | ||
| Address | ||
| University of Ljubljana, Faculty of Civil and Geodetic Engineering, Jamova 2, SI-1115 Ljubljana, Slovenia | ||